Finding the Third Proportional to 765,558 and 1,788,129

Step by Step Solution

1. Step 1: Write the proportion equation
   765,558 : 1,788,129 = 1,788,129 : x
2. Step 2: Convert to fraction form
   765,558/1,788,129 = 1,788,129/x
3. Step 3: Cross multiply
   765,558x = 1,788,129 × 1,788,129
4. Step 4: Simplify right side
   765,558x = 3,197,405,320,641
5. Step 5: Solve for x
   x = 3,197,405,320,641/765,558
6. Step 6: Final answer
   x = 4,176,568.36